[Nobuyoshi Koji's Weekly ELECTRIC ZOOMA!] Try NUARL "NT01AX" to aim for an inexplicable "ultimate left and right separation earphones" -Av Watch

It can be said that the left and right separation type earphones have already entered the entry mode because many manufacturers have already entered and the price has progressed.Meanwhile, the word "TrueWireless" seems to be walking alone.

You may not only think that the connection with the player is wireless, but also the left and right, so you may think that it is TrueWireless, but in fact TrueWireless is the name of the Qualcomm's audio transmission technology.

Generally, the left and right separated earphones equipped with a Qualcomm SOC receive music via Bluetooth on the left side, play the sound of the left channel, and transmit the right channel signal to the right side (there is also a design that is left and right (there is also a left -right reverse design.obtain).This is because in the current Bluetooth specification, the regenerator and the receiver paired one -on -one, so the left and right sounds cannot be divided and cannot be transmitted to the device.This transmission method is called "TrueWireless Stereo".

The reason why the sound is out of the sound with the left and right separation type is that the transmission between the left and right is interrupted.Radio waves cannot be transmitted in the water, but the head cannot go straight in the head because a large amount of blood circulates.Therefore, in order to eliminate the sound of sound, each company has increased radio waves and devised antenna shape, and bypassing the head to connect the left and right.

NFMI, which is known for its difficulty of sound, transmits this left and right transmission by electromagnetic induction, not radio waves.To put it simply, it is transmitted by magnetic force.Since magnetic force can be transmitted underwater, it can be transmitted between the left and right through the head.Therefore, it is said that the sound is strong.

On the other hand, Qualcomm has already been exhibiting technical exhibitions that can be connected to multiple devices at the same time in Bluetooth from 2017.As an extension, a technology called "TrueWireless Stereo Plus", which transmits the left and right sound separately with Bluetooth, has been realized.

If the left and right can be transmitted independently, the out of the left and right sounds will be solved.NUARL's "NT01AX" is equipped with this TrueWireless Stereo Plus.The price was 18,000 yen on the release on December 14 last year.This time I want to try this earphone.